英语翻译The 1 story-building roof is comprised of layered vinyl/

英语翻译
The 1 story-building roof is comprised of layered vinyl/rubber roofing material with no ballast above 3-4 inches of “iso-foam” type insulation above gypsum board decking.
The 1 story-building roof is comprised of layered vinyl/rubber roofing material with no ballast above 3-4 inches of “iso-foam” type insulation above gypsum board decking.The structural joist system is comprised of a column and beam system 48’ O.C.capped with a flat bar joist system 5’ O.C.and the panel points are 5’ O.C.